Manual Transaxle Models:

Vehicles, which are equipped with manual transaxle, detect the vehicle speed using the No. 1 vehicle speed sensor. The No. 1 vehicle speed sensor transmits a 4-pulse signal for every revolution of the rotor shaft, which is rotated by the transaxle or transfer output shaft via the driven gear. The 4-pulse signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter. The signal is then transmitted to the ECM. The ECM determines the vehicle speed based on the frequency of the pulse signal.






No. 1 Vehicle Speed Sensor

Combination Meter


DTC Detection Conditions

Trouble Areas


ECM detects following conditions simultaneously 500 times (1 trip detection logic)

• No SP1 (speed sensor) signal while ECM detects SP2 (No. 2 speed sensor) signal

• Vehicle speed 6 mph (9 km/h) or more for 4 seconds

• Park/Neutral position switch OFF (shift lever other than P and N positions)

• Transfer lever in other than N position (4WD)

• Open or short in speed signal circuit

• Combination meter

• Skid control ECU

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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